WIKA FLM - Handbuch (Seite 6)

GB
6 WIKA operating instructions level sensor model FFG
13445627.01 12/2010 GB/D/F
DANGER!
Work in containers involves the danger of intoxication and
suffocation. No work is allowed to be carried out unless by
taking suitable personal protective measures (e.g. respirato-
ry protection apparatus, protective outfit etc.).
Danger of explosion
Inside the container, there is danger of an explosive atmos-
phere. Corresponding measures for preventing sparking
should be taken. No work is allowed in this area unless by
technically skilled staff in accordance with applicable safety
regulations.
2. Description of functions and design
The WIKA model FFG level sensor acts as a measured value transmitter
for high-accuracy, continuous level measurement of liquids and is
based on identifying the position of a magnetic float following the
magnetostrictive measuring principle.
The design of the level sensor system is shown in figure 1 in the form
of embodiment furnished with a screwed-in element. Provided in the
probe head (1) is the area of connection and adjustment protected by
lid (2). The electrical connection is via an M16x1.5 cable gland (3) at
the top of the probe head while the earth connection (4) is at the bottom
of the probe head. Seated on the probe tube (5) for vertically adjustable
assembling purposes, within the container, is a compression fitting (6)
(G 1/2, W 27) or a flange (not shown). The float (7) serves for conti-
nuously gauging the product level or interface layer, and is held on the
probe tube by a guiding or locking ring (8) etc.
1. Safety information / 2. Description of functions ...